Vitis Labrusca L. grapes cultivars under hydric stress in protected cultivation

Gentil Luiz Miguel Filho,Luciano Dias Cabral Neto,Douglas José Marques,Lucas Eduardo De Oliveira Aparecido,Paulo Sergio De Souza

doi:10.1590/0100-29452020009

Gentil Luiz Miguel Filho, Luciano Dias Cabral Neto + Show 3 more

Open Access

https://doi.org/10.1590/0100-29452020009

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Abstract

Abstract The expansion of the Brazilian wine border, combined with the development of new cultivars adapted to different regions, highlight the need for more information on irrigation handling for new cultivars in protected cultivation. Therefore, this study aimed to evaluate grapevine cultivars submitted to different percentages of water replacement in the soil in conditions of the Southern region of Minas Gerais with the use of irrigation. The experiment was installed and developed from 2014 to 2016. The experimental design used was random blocks, with five replicates and the treatments were disposed in subdivided plots, with three replacement percentages (30, 50 and 100 % of necessary water replacement for this type of soil) and in the subplots four grapevine cultivars belonging to Vitis labrusca L species. (‘Isabel’, ‘Isabel Precoce’, ‘BRS-Cora’ and ‘BRS-Violeta’). The research concluded that these cultivars increased 75 % the bunch length, 71 % of the bunch weight, 39 % the production of bunch of grapes, 52 % the pH, 84 % the soluble solid content and 60 % the reduction of total acidity content, 60 % to 100 % of water replacement. ‘Isabel precoce’ cultivar in water deficit conditions obtained the best productive results.

Highlights

Among the grapes produced in Brazil, half is explored for processing and the other half is aimed at meeting consumption demands in natura
The viticulture for processing is strongly concentrated in the states of Rio Grande do Sul, Santa Catarina and Paraná, while the production of table grapes predominates the states of Pernambuco, Bahia, São Paulo and Minas Gerais
Isabel precoce cultivar was superior for bunch length (Figure 6A), bunch weight (Figure 6B), and grape production (Figure 6C) in the different percentages of water replacement necessary for this soil

Summary

Introduction

Among the grapes produced in Brazil, half is explored for processing (wines, juices etc.) and the other half is aimed at meeting consumption demands in natura. There are more than 5,000 grape varieties in the world, but the consumer is used to finding in the market and supermarkets, only two or three varieties. Despite this large availability of varieties, the wine growers, end up specializing in the production of only one or two cultivars. This wide diversity of species and cultivars can produce grapes with distinct physicochemical characteristics that need studies (AEB and al., 2007)

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